Inclusion criteria:
- The study recruited any hospitalized case with pulmonary symptoms necessitating admission in intermediate care and/or ICU during the period between 27th March and 11th April 2020.
The study is international multicentre study included 3 centres (Cardiology and Chest hospital of Zagazig university hospitals and its isolation unit, Egypt), (Covid assigned Hospital, Athens ,Greece) and (National Institute of Cardiology, México)
• Exclusion criteria: Patients with one or more of the following criteria were excluded from the study: - Patients with congestive heart failure - Patients with pulmonary embolism - Patients with poor echo-window
Patients were seen at first at Emergency Department (ED) that did the required investigations for all patients and classified them. Patients were first questioned about symptoms suspecting Covid 19 infection. Those who met the suspected clinical and investigational criteria were given a standard mask and were rapidly transferred in a safe way to a separate waiting and isolation area (isolation) with available infrastructure and tools for hand and respiratory hygiene practice. If the patient was proved to be positive for SARS‐CoV‐2, he was sent to quarantine. For negative patients, they were admitted to intermediate or ICU according to their clinical status.